You are using a radar in which your own ship is shown at the center, and the heading flash always points to 0°. If bearings are measured in relation to the flash, what type of bearings are produced?

When radar displays show the vessel at the center and the heading indicator points to 0°, the bearings measured in relation to this heading are referred to as relative bearings. This means that the bearings are based on the observer's perspective aboard the ship, with 0° indicating the direction directly ahead. As the vessel turns, the reference point (the heading flash) moves with the ship, which is why these bearings are considered relative to the ship's current heading.

Relative bearings are particularly useful in navigation as they allow crew members to quickly assess positions and movements of other vessels or landmarks in relation to their own vessel's orientation. This system provides immediate situational awareness without the need for further calculations or adjustments to a fixed reference point like true north. True bearings would refer to angles measured from a fixed reference (like true north), while compass and magnetic bearings incorporate the ship’s heading and the magnetic variations on the earth's surface, which adds a layer of complexity that relative bearings do not have.